DEREK TRIES TO CONVINCE RICHARD TO SEEK TREATMENT FOR HIS DRINKING, EARN THE RESPECT OF THE HOSPITAL STAFF AND AVOID A POTENTIAL LAWSUIT, ALL ON HIS FIRST DAY AS INTERIM CHIEF, ON ABC'S "GREY'S ANATOMY"

Guest Starring Kim Raver ("24," "Lipstick Jungle") as Teddy Altman

"State of Love and Trust" – As Derek begins his role as interim chief, he faces a potential lawsuit when Bailey and Meredith's patient awakens from anesthesia mid-surgery. Meanwhile, Teddy refuses to place Cristina on her service, as Arizona tests Alex out in Pediatrics, and Mark refuses to speak to a heartbroken Lexie, on "Grey's Anatomy," THURSDAY, FEBRUARY 4 (9:00-10:01 p.m., ET) on the ABC Television Network